Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Narrative) (Details)

v3.20.4
Commitments and Contingencies (Narrative) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
contract
Feb. 26, 2021
USD ($)
Operating Leases And Other Property Plant And Equipment [Line Items]    
Contractual obligation $ 210,931  
Drilling rig contracts    
Operating Leases And Other Property Plant And Equipment [Line Items]    
Contractual obligation $ 4,317  
Certain Drilling Rig Contract    
Operating Leases And Other Property Plant And Equipment [Line Items]    
Long-term commitment, period 1 year  
Certain Drilling Rig Contract | Subsequent Event    
Operating Leases And Other Property Plant And Equipment [Line Items]    
Contractual obligation   $ 5,500
Horizontal Drilling Rig    
Operating Leases And Other Property Plant And Equipment [Line Items]    
Number of contracts | contract 2